The Pf Encoder Sensor Cannot Detect The Rotation Of The Paper Feed Motor; Overcurrent Protection Was Activated In The Driver Ic During Paper Feed Motor Operation; Paper Feed Motor Does Not Stop - Brother MFC Series Service Manual

■ Error Code 8A
Paper Jam

The PF encoder sensor cannot detect the rotation of the Paper feed motor.

Error Code 8C
Paper Jam

Overcurrent protection was activated in the driver IC during Paper feed motor operation.

Error Code 8F
Unable to print 8F

Paper feed motor does not stop.

The PF encoder sensor cannot detect the rotation of the Paper feed motor.
<User Check>
- Release the release lever at the back of the Paper tray and remove the jammed
recording paper in Jam clear cover part, Platen part and front part.
Step
1 Foreign materials in the
recording paper feeding path
2 Paper feed motor harness
connection failure
3 PF encoder sensor harness
connection defective
4 PF encoder disk defective
5 PF encoder sensor defective
6 Paper feed motor defective
7 Main PCB defective
Cause
Remove foreign materials.
Reconnect the Paper feed motor harness.
Reconnect the PF encoder sensor harness.
Replace the PF encoder disk.
Replace the PF encoder sensor PCB ASSY.
Replace the Paper feed motor.
Replace the Main PCB ASSY.
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LCD
LCD
LCD
Solution
Confidential